Window of Opportunity Alaunch windowis a particular period during which it will be easier to place the satellite in the orbit necessary to perform its intended function. With the space shuttle, an extremely important factor in choosing the launch window was the need to bring down the astronauts ...
(b) The safety of space operations, with emphasis on the problems involved in operations in the geostationary orbit, in mid-Earth orbits (at an altitude of about 20,000 km) and in low-Earth orbits (atanaltitudeofbetween1,000 and 1,500 km) ...
A program "GEO-Evol" was developed to simulate orbital object population growth in geostationary orbit, taking into consideration the launch rate, re-orbiting rate of satellite at their end-of-life and other fragment production processes. Two parameters are found to be remarkably influential, the ...
low-altitude earth orbit Low-Altitude Forward Area Air Defense Low-Altitude Long-Endurance low-altitude missile engagement zone low-altitude missile engagement zone Low-Altitude Navigation & Targeting Infrared for Night Low-Altitude Night Attack
In recent years the number of LEO satellites that carry a GPS receiver on-board has significantly increased. However, in orbits above the GPS satellites there is no experience about the reception of GPS signals. Especially in the Geostationary Orbit with its dense satellite population a precise or...
Airbus, Nippon Telegraph and Telephone Corporation (NTT), NTT DOCOMO, INC. (DOCOMO) and SKY Perfect JSAT Corporation (SKY Perfect JSAT) jointly announced that they have begun studying the feasibility of collaborating on future high-altitude platform stat
Frequency sharing between systems in the fixed service using high-altitude platform stations and satellite systems in the geostationary orbit in the fixed-satellite service in the bands 47.2-47.5 and 47.9-48.2 GHz Compartición de frecuencias entre sistemas del servicio fijo que utilizan estaciones ...
PROBLEM TO BE SOLVED: To eliminate complication, to provide flexibility and to lower the burdens of a user for executing a relay function by synchronizing an earth geostationary satellite or an earth synchronous relay satellite and an intermediate earth orbit relay satellite and forming a continuous ...
Alternatively, it can be outfitted to take a payload of about 21,000 kilograms into a higher, geostationary orbit, or one of 13,000 kilograms all the way to Mars.Having the horsepower to make a trip is only a fraction of the work of actually getting there, of course, and launc...
Simultaneous measurements of the low-altitude energetic particle flux by NOAA spacecraft and the geostationary magnetic field by GOES 2 spacecraft are used... VA Sergeev,M Malkov,K Mursula - 《Journal of Geophysical Research Space Physics》 被引量: 533发表: 1993年 The Visible Imaging System %...